LARVAL AND POST-LARVAL TELEOSTEANS. 347 



LABRIDvE. 



Labrus bergylta Asc. Ctenolabrus rupestris L. 



I have referred the pelagic young stages to the above two species 

 which are recorded in Table 25. Ctenolabrus rupestris L. is quite a 

 distinct form and easily recognized by the help of Ehrenbaum's descrip- 

 tions and figures in " Nordisches Plankton,"' Vol. I. Holt gives the 

 spawning period from April to July, and this agrees with the occurrence 

 of the species during the present investigations. The maximum frequency 

 is in July ; distribution is general in the area investigated. 



The records of L. bergylta Asc. show a similar spawning period with 

 an extension to August. The maximum is in June and July. It is 

 possible that a few individuals of L. mixtus may be included in the list, 

 but as the present state of our knowledge with regard to these two 

 forms is extremely limited, the latter has meantime been excluded. 

 The material seems to suggest two forms, one with a clear caudal peduncle 

 region, the other with a slight continuation of the black stellate chromato- 

 phores along the ventral margin as indicated in Hefford's newly hatched 

 larva of L. mixtus.'* These two forms, however, show gradations of 

 pigment. 



* Journ. M.B.A. N.S., Vol. IX, No. 1. 1910. 



